When I worked at Deere dealer, I replaced a differential case in a 4440. It broke the bearing support off just like the IH tractors did and the new one was a improved version. I don't remember how much internal parts I replaced in the differential and weather it was a two or three or four pinion spider gear setup. Horse power was not set up from factory as far as I know and owner was older gentleman not interested in the max.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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